Fusion is usually measured by the detection of neutrons at the proper energy level for the fusion reaction you are looking for. H-Boron fusion does not release

Fusion is usually measured by the detection of neutrons at the proper energy level for the fusion reaction you are looking for. H-Boron fusion does not release neutrons (or at least enough to measure) but alpha particles instead. TAE tested an alpha particle detector in a Japanese stelarator with Hydrogen plasma with Boron injected in and they successfully detected a small amount of alpha particles, and confirmed they were coming from H-Boron fusion. All this proves is that their alpha particle detector works, which TAE will need for their later devices. The H-Boron fusion was detectable, but nowhere near enough to get excited about. People make fusors in their garages that make small amounts of fusion everyday, but just with deuterium. TLDR; their alpha particle detector works. That is all.